Wire-twisting tool



E. H. CARLSON. WIRE TWIS'HNG' TOOL.

APPLICATION FILED MAR. I0. I91].

1 324,583. Patented Dec. 9, 1 919.

2 SHEETS-SHEETI.

. E. u. CARLSON. 4 WIRE TWISTING TOOL.

APPLICATION FILED MAR. 10. 1917.

Patented De. 9,1919.

A lw ERNST H. crimson, or cnrcaso, ILLINOIS, assrenoni or own-HALF T0 or oIIIcAeo, ILLINOIS.

ERNST EKMAN,

WIBE-TWISTING TOOL.

Application filed. March 10,

To all whom it may concern:

Be it known that I, EnNsT H. CARLSON, a citizen of the United States of America, and a resident of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Wire- TwistingTools, of which the following is a specification. I

The main objects of this invention are to provide an improved form of tool or implement adapted for the twisting together of wires or'tlie ends of a wire; to'provide such a tool adapted to hold the free adjacent wire ends in spaced relation so that an even and uniform twist may be secured; to provide a wiretwisting tool which is simple in construction and rapid and efficient inoperation; and to provide such a tool adapted especially for setting the stay wires in-conk crete forms. 7

An illustrative embodiment of theinvention is shown in the accompanying drawings, in which r Figure l is a front view of the improved wire twisting tool with a portion of one of the casing members broken away. 7

Fig. 2 is a view in perspective of the easing or supporting member with portions thereof broken away to show the interior construction and mechanism housed therein. Fig. 3 is a side view, partly in section, with partsthereof broken away.

Fig. l is a view showing how the improved tool is used for twisting wire. Fig. 5 is a front view of another embodiment or modified form of my improved device.

Fig. 6 is a side view of on the line A-A of Fig. 5. w Fig. 7 is a sectional detail taken on the line B 43 of Fig. 5.

Fig. 8 is a detail inperspecti-ve of the wire holding member.

Fig. 9 is a view showing the improved tool employed for another use. I

This invention relates to a tool which is adapted to take the place of the ordinary. pair of pliers for the twisting of wire, parthe same, taken ticularly where heavy, stiff wire is used...

The twisting of such wire with ordinary u V J pliers lsdifficult and slow, as the pllers orten slip oif and even at the best, an even and uniform twistof the wire is seldom secured.

In concrete construction work, the forms are usually held together by means of pieces Specification of Letters Patent. 7 Patented Dec, 9, 1919,

1917. Serial No. 153,838.

lVit-h my invention, these wires may be readily twisted time ordinarily thereby greatly of the forms. 7 V

In the construction f shown in the drawings, the form shown in Figs. 1, 2,13, 4 and up in a small part of the required for thatpurpose, facilitating the setting up 9 comprises a pair of semi-circular casing members 1 and 2, in the form of complementary annulus segments, adaptedto form a supporting member. A pair of handles '3 and 4 are mounted on the casing members 1 and 2 respectively and are pivoted together, as in tongs or pliers, at 5 so that the casing-members may be swung toward and away from each other. p i

A wire holding member of discoidal shape comprising a pair of semi-circular disk segments 6 and 7, which are" pivoted forma substantially circular disk, is journaled between the casing members 1 and 2, and is adapted to rotate relatively thereto. The members 6 and 7 are provided with apertures 9 and '10 respectively, for receiving the ends or other parts of'the wire to be twisted. The outer peripheral edge. of" the wire holdingmember is provided with a pluralityof ratchetteeth 11 which are adapted together at or near one side as atg8, so as to to coact with apawl 12 pivotally mounted at 13 on the casing member 2"and which is 'normally'urged yieldingly into contact with the ratchet teethby means of a compression spring 14, seated against the screw 14 in the aperture 1 The edge of the wire holder 6.7 is flanged at 6 and 7 respectively to coact with flanges .1 and 2 on members 1 and 2 (see Fig. 2), whereby said holder 1s posltively retained in the casing 1-2' so long as the handles 3' and i are attached at pivot 5, and danger of separation I I and loss of said holder is thereby avoided.

The wire holding member fits somewhat loosely in the casing members 1 and 2 s0 that when it is turned to the position shown in Fig. 2, the members 6 and-7 may be swung apart a suiiicient distance to allow the memm 1,324., see

1, 'lirough the handle 3 in position to bear against the handle a. As the wire holding memb'" becomes looser by reason of wear, ng members may be adjusted so as to r by turning back the set screw 16.

are provided for positively holdl and 4.- together mechaninandles o epenuent ot the grip thereon by the so that when once placed upon the to be t 'isted it can be rapidly reciproc .cd heel; and forth, which means compris a sleeve 17 mounted loosely on the hanm nee; their point of pivotal connection. The sleeve 17 is adapted to he slid down t handles 3 and ias shown in dotted lines in Fig. 3. it is yieldingly retained in this position by a spring pressed button 18 mounted in the handle 4.

In the construction shown in Figs. 5, 6, '7 and 8, the wire holding member comprising the dish segments 6 and 7 is provided with teeth 19 cut in the upstanding peripheral edge thereof, and the ratchet teetl are omittes, and likewise the pawl which coacts therewith. The wire holding member is rotated relative to the supporting casing members 1 and 2 by means of a pinion 20 mounted on one end of the shaft 21. The shaft 21 is journaled on the bearings and and the other end thereof is provided with a beveled pinion 24; which coacts with a driving gear 25 journaled at 26 on the handle a. A handle 27 is provided on the driving gear 25 for operating the same.

In the operation of the form shown in Figs. 1, 2, 3 and at, the wire holding member, comprising the disk segments 6 and 7, is rotated until the point of pivotal connection 8 of the disks is adjacent the point of pivotal connection or the operating handles as shown in Fig. 1. T he sleeve 17 is then slid down adjacent the pivot 5, and the operating handles 3 and are swung apart, thereby swinging the supporting casing members 1 and 2 apart and thus causing the segments 6 and to open. The wire holding member, comprising the segments 6 and 7, is then passed over the pair of wires to be twisted, and the operating handles 3 and at are brought together. The sleeve 17 is then slid down over the handles, past the spring actuaed button 18 which yieldingly retains it in this position. The operating handles are then reciprocated back and forth in a plane perpendicular to the axis of rotation of wire holding member, thus causing the wire holding member to be ratcheted around relative to the supporting casing members. The pair of wires being supported in the apertures 9 and 10 are held in spaced relation and thus an even and uniform twisting oi the wire is secured.

The opening and closing movements of the casing 1-2 and the wire holder 6-7 arepositively correlative, inasmuch as any such movement of one must be accompanied, due to their mechanical relation, by a corresponding movement of the other. The angular amplitude of such movement is inherently limited by the permanent concentricity of the coacting casing and holder segments 1, 6, and 2, 7. As the device opens and the casing segments swing apart, the holder se ments slide in the casing away from the outer aperture 15, the pivot 8 remaining midway between parts 1 and 2. This movement is limited by the mutual relation of the casing and holder parts, as will be apparent, but suiiicient to admit the wires.

In the operation of the modification shown in Figs. 5, 6, 7 and 8, the wire is placed in the wire holding member as hereinbefore set forth. Instead of reciprocating the operating handles to rotate the wire holdin member, the handles are rigidly held by one hand and the handle 27 of the driving gear 25 is rotated by the other hand, thereby rotating the wire holding disk through the medium of the pinion 2e, shaft 21 and pinion 20.

This modification of the wire twisting tool is adapted for use in places where there is not room for reciprocating an operating I handle as required "for the form shown in Figs. 1, 2, 3 and e, and furthermore, avery rapid twisting of the wire can be effected by the use of the second form of the device.

Although but two specific embodiments of this invention are herein shown and described, it will be understood that numerous details; of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim:

1. A tool comprising in combination a circular segmental casing and a flat segmental holder of less diameter carried thereby in the same plane, said casing and holder being normally concentric and having means to effect relative rotation, said casing and holder each having their segments hinged together adjacent to their edges for swingingin said plane when the pivotal axes are swung to their adjacent positions in radial. alinement, and the coacting casing and holder segments having coacting concentric guide means adapted to maintain the concentricity of said segments in opening and closing and to prevent loss of said holder.

2. A tool comprising in combination a pair of complementary annulus segments, a pair of tong-like handles fixed to adjacent ends of said segments and pivoted together adjacent thereto, said segments having inwardly facing channels constituting a circular raceway when said segments are closed together, a discoidal work holder carried'by said segments, and means to effect rotation of said holder in said raceway, said holder comprising a pair of segments formed on their abutting edges to receive the work and pivoted together adjacent to the edge of said holder to swing in the plane thereof, said raceway being formed to maintain the concentricity of corresponding annulus and holder segments when the pivots are in adj acent radial alinement for opening and closing the tool.

3. A plier-like wire twisting tool of unitary character comprising a pair of handles connected pivotally adjacent to one end, said handles having complementary semicircular casing members adjacent to the pivotal connection, and a disk-shaped peripherally flanged sectional wire holder made in two similar complementary segments hinged together at one edge and held rotatably within said casing members, said holder having a pair of wire receiving edge apertures on the line of separation where the 7 centricity of the holder and casing members when the pivots are in radial alinement and V the tool is opened and closed, and so prevent removal of the holder.

Signed at Chicago this 28th day of Feb, .917.

ERNST H. CARL-SON. 

